36 Hole Front Hub Options

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36 Hole Front Hub Options

Post by johnu » Sun May 10, 2020 6:41 pm

So I'm planning to build up my mx wheels with Excel rims but come to find out that they don't have a 40 hole wm1 21" front rim, only 36 hole. The only alloy front rims I can find with 40 hole are Sun rims (expensive) and they are non dimpled. What are some alternative front hubs that I could use that are fairly easy to source?
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Re: 36 Hole Front Hub Options

Post by 2manyrides » Sun May 10, 2020 9:51 pm

Right, no dimples...
701590A3-C403-4D71-9327-7BB936D87A98.jpeg
Do you have to have dimples?
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Re: 36 Hole Front Hub Options

Post by Jeff K » Mon May 11, 2020 1:08 am

There is a Italian company selling alloy rims made in China that are stamped made in Italy. But there is also still a Italian company still making alloy rims. Check this guy, I have bought from him in the past.
https://www.ebay.com/itm/361675824685
WM1 1.60 X 21 -40 hole Akront/Italian style flanged alloy vintage motorcycle rim
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Re: 36 Hole Front Hub Options

Post by johnu » Mon May 11, 2020 1:10 am

2manyrides wrote:
Sun May 10, 2020 9:51 pm
Right, no dimples...

701590A3-C403-4D71-9327-7BB936D87A98.jpeg
Do you have to have dimples?
Yeah I will probably end up with the Sun rims as even though they are so expensive it's probably cheaper than buying a new hub. I am just an Excel guy, have them on all of my mx bikes. Also I wanted the gold Excels and the Sun rims gold is a totally different shade. A dilema!
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Re: 36 Hole Front Hub Options

Post by Momus » Mon May 11, 2020 4:04 am

johnu wrote:
Sun May 10, 2020 6:41 pm
So I'm planning to build up my mx wheels with Excel rims but come to find out that they don't have a 40 hole wm1 21" front rim, only 36 hole. The only alloy front rims I can find with 40 hole are Sun rims (expensive) and they are non dimpled. What are some alternative front hubs that I could use that are fairly easy to source?
A 70s Yam aha conical hub and backplate from a MX, YZ, or IT is a very good 36 hole choice. Light, strong available and better looking than the Beezer thing. Twin leading shoe plates are available from later 80's bikes and they are all left side leading cable brake mt to get rid of the awful std arrangement. Choice of shoe compounds as well if you search.
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Re: 36 Hole Front Hub Options

Post by johnu » Mon May 11, 2020 3:48 pm

Momus wrote:
Mon May 11, 2020 4:04 am
johnu wrote:
Sun May 10, 2020 6:41 pm
So I'm planning to build up my mx wheels with Excel rims but come to find out that they don't have a 40 hole wm1 21" front rim, only 36 hole. The only alloy front rims I can find with 40 hole are Sun rims (expensive) and they are non dimpled. What are some alternative front hubs that I could use that are fairly easy to source?
A 70s Yam aha conical hub and backplate from a MX, YZ, or IT is a very good 36 hole choice. Light, strong available and better looking than the Beezer thing. Twin leading shoe plates are available from later 80's bikes and they are all left side leading cable brake mt to get rid of the awful std arrangement. Choice of shoe compounds as well if you search.
Thanks, I will look into that option :thumb Do the rear hubs work also? I would prefer to have a matching set.
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Re: 36 Hole Front Hub Options

Post by Momus » Tue May 12, 2020 12:05 pm

Rear is LH drive RH brake
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Re: 36 Hole Front Hub Options

Post by kommando » Tue May 12, 2020 2:20 pm

Excel rims can be supplied undrilled, worth asking if they can also come without dimples. Good wheel builders can drill holes to suit your application.
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Re: 36 Hole Front Hub Options

Post by kommando » Tue May 12, 2020 6:05 pm

Looked at your location and thought of Speed & Sport who have a good reputation and I found

https://www.speedandsport.com/index.php ... n-dimpled/
Excel rims are possibly the highest-quality alloy rims on the market. They are anodized with a very-bright, almost-polished appearance, with a red Excel logo on each side of each rim. The lack of spoke dimples allows for custom drilling to complement any hub, regardless of the hub's diameter or spoke-count.
But not in gold sadly but WM1-21 are listed.

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Re: 36 Hole Front Hub Options

Post by johnu » Tue May 12, 2020 8:23 pm

kommando wrote:
Tue May 12, 2020 6:05 pm
Looked at your location and thought of Speed & Sport who have a good reputation and I found

https://www.speedandsport.com/index.php ... n-dimpled/
Excel rims are possibly the highest-quality alloy rims on the market. They are anodized with a very-bright, almost-polished appearance, with a red Excel logo on each side of each rim. The lack of spoke dimples allows for custom drilling to complement any hub, regardless of the hub's diameter or spoke-count.
But not in gold sadly but WM1-21 are listed.
Thanks for your help!
Yes I've bought a lot of stuff from speed & sport in the past and I did see the rims on there. I am also very close to Buchanans Wheels which are probably the biggest wheelbuilders around they also do not have Excels with the 40hole. The produce the Sun rims so can supply those in 40 hole non dimpled, I'm sure they could supply an Excel non dimpled 40 hole as they drill those to suit. I'm just not wanting non dimpled rims. I have found a 36 hole front hub from a Y*maha that I am going to use.
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Re: 36 Hole Front Hub Options

Post by johnu » Wed May 13, 2020 12:53 am

Found a 1980 Y*maha YZ465 hub, wondering if the same year YZ125 brake plate will fit that hub?
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Re: 36 Hole Front Hub Options

Post by Momus » Wed May 13, 2020 6:45 am

johnu wrote:
Wed May 13, 2020 12:53 am
Found a 1980 Y*maha YZ465 hub, wondering if the same year YZ125 brake plate will fit that hub?
Not sure re 125 plate- try a P/N comparison; You want a straight leg backing plate so prior to leading axle.. You should be able to get a twin leading backing plate for that- but will have the clocked slot.
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Re: 36 Hole Front Hub Options

Post by johnu » Wed May 13, 2020 3:57 pm

Momus wrote:
Wed May 13, 2020 6:45 am
johnu wrote:
Wed May 13, 2020 12:53 am
Found a 1980 Y*maha YZ465 hub, wondering if the same year YZ125 brake plate will fit that hub?
Not sure re 125 plate- try a P/N comparison; You want a straight leg backing plate so prior to leading axle.. You should be able to get a twin leading backing plate for that- but will have the clocked slot.
Ok thanks. I found out that the 1980 YZ125 backplate does fit the 465 hub :thumb It also has the straight locator slot. Not sure how I'm going to locate it the BSA fork but I can figure something out!
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Re: 36 Hole Front Hub Options

Post by Momus » Wed May 13, 2020 4:48 pm

johnu wrote:
Wed May 13, 2020 3:57 pm
Momus wrote:
Wed May 13, 2020 6:45 am
johnu wrote:
Wed May 13, 2020 12:53 am
Found a 1980 Y*maha YZ465 hub, wondering if the same year YZ125 brake plate will fit that hub?
Not sure re 125 plate- try a P/N comparison; You want a straight leg backing plate so prior to leading axle.. You should be able to get a twin leading backing plate for that- but will have the clocked slot.
Ok thanks. I found out that the 1980 YZ125 backplate does fit the 465 hub :thumb It also has the straight locator slot. Not sure how I'm going to locate it the BSA fork but I can figure something out!
No photo but you may be able to make a fitting that is screwed into the slot of the Yammy back plate and has a section of a tube that wraps around about 90 degrees of the fork leg.

When it is all tightened the plate will not be able to move.

I've welded lugs onto aluminium fork legs with success as well.
If you love it, lube it.

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Re: 36 Hole Front Hub Options

Post by johnu » Wed May 13, 2020 8:34 pm

Momus wrote:
Wed May 13, 2020 4:48 pm
johnu wrote:
Wed May 13, 2020 3:57 pm
Momus wrote:
Wed May 13, 2020 6:45 am

Not sure re 125 plate- try a P/N comparison; You want a straight leg backing plate so prior to leading axle.. You should be able to get a twin leading backing plate for that- but will have the clocked slot.
Ok thanks. I found out that the 1980 YZ125 backplate does fit the 465 hub :thumb It also has the straight locator slot. Not sure how I'm going to locate it the BSA fork but I can figure something out!
No photo but you may be able to make a fitting that is screwed into the slot of the Yammy back plate and has a section of a tube that wraps around about 90 degrees of the fork leg.

When it is all tightened the plate will not be able to move.

I've welded lugs onto aluminium fork legs with success as well.
Thanks! I'll come up with something, I was a mechanical designer for 15 years so I should be able to come up with something :mrgreen: Always easier if you can see what others have done though of course!
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Re: 36 Hole Front Hub Options

Post by Momus » Fri May 15, 2020 4:17 pm

SAM_0512.JPG
Here is one I'm doing for a leg with no lug and no room, that I've no inclination to do a weld build up on.

The added section is a crescent-6061 material- that I'll trim back. The plate is for the Yam aha conical hub I mentioned. For this swap it was difficult wheel to fit because it is quite a bit wider than the original.
You could do similar without welding.
A couple of M8 or M6 cap screws are sufficient to fasten the anchor.
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Re: 36 Hole Front Hub Options

Post by johnu » Fri Jul 31, 2020 10:53 pm

Ended up using original hub with Sun rims.
IMG_6222.jpg
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Re: 36 Hole Front Hub Options

Post by Momus » Sun Aug 02, 2020 7:44 am

Looking good.
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